774113227649 has 2 divisors, whose sum is σ = 774113227650. Its totient is φ = 774113227648.

The previous prime is 774113227633. The next prime is 774113227663. The reversal of 774113227649 is 946722311477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403193250625 + 370919977024 = 634975^2 + 609032^2 .

It is an emirp because it is prime and its reverse (946722311477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 774113227649 - 2⁴ = 774113227633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 774113227649.

It is not a weakly prime, because it can be changed into another prime (774113227049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387056613824 + 387056613825.

It is an arithmetic number, because the mean of its divisors is an integer number (387056613825).

Almost surely, 2^774113227649 is an apocalyptic number.

It is an amenable number.

774113227649 is a deficient number, since it is larger than the sum of its proper divisors (1).

774113227649 is an equidigital number, since it uses as much as digits as its factorization.

774113227649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 53.

The spelling of 774113227649 in words is "seven hundred seventy-four billion, one hundred thirteen million, two hundred twenty-seven thousand, six hundred forty-nine".